sin and cos

sin(45-x)*

sin(45-x)=cos(45-x)

(sin45)(cos x) - (cos45)(sin x) = (cos 45)(cos x)+(sin 45)(sin x)

cos x - sin x = cos x + sin x

Notes: sin 45 = cos 45

- sin x = sin x

2 sin x = 0

sin x = 0

x = sin^-1 0 = 0